diff -up libQGLViewer-2.9.1/QGLViewer/VRender/gpc.cpp.exit libQGLViewer-2.9.1/QGLViewer/VRender/gpc.cpp

--- libQGLViewer-2.9.1/QGLViewer/VRender/gpc.cpp.exit	2023-01-26 10:26:55.315899363 +0000

+++ libQGLViewer-2.9.1/QGLViewer/VRender/gpc.cpp	2023-01-26 10:27:39.642119598 +0000

@@ -150,7 +150,7 @@ using namespace std ;

 #define MALLOC(p, b, s, t) {if ((b) > 0) { \

 							p= (t*)malloc(b); if (!(p)) { \

 							fprintf(stderr, "gpc malloc failure: %s\n", s); \

-							exit(0);}} else p= nullptr;}

+							abort();}} else p= nullptr;}

 #define FREE(p)            {if (p) {free(p); (p)= nullptr;}}